Sometimes ⑦________ wonder how relevant chemistry is to these students, most of ⑧________ will be going back to their villages ⑨________ Year 8 anyway. To be honest, I doubt ⑩________ I'm making any difference to these boys' lives at all.

　　答案：①challenging　②if　③it　④was showing　⑤mixture　⑥who　⑦I　⑧whom　⑨after　⑩whether 考点探究演练 1.adjust vi. & vt. 调整；(使)适合；校准 归纳拓展 adjust sth. (to sth.) 调整(以适应/适合) adjust to (doing sth.) 适应(做)某事 adjust/adapt oneself to sth. 使自己适应于 make adjustment to ... 对……作调整

　　③We have made an ________(adjust) to our price and give you a special discount of 3 percent. 我们对价格做了调整，给你们百分之三的特殊优惠折扣。 ④However, I think that you will quickly adjust ________ them although the weather and the food are different from yours. 然而，虽然天气、食物与你以往有所不同，我相信你会很快适应的。 答案：①adjusting　②living　③adjustment　④to

　　2．donate vt. 捐赠；赠予 归纳拓展 donate blood 献血 donate (money, goods, etc.) to ... 捐(钱、物等)给…… make a donation (to ...) (为……)作捐赠 答案：①donated blood　②to　③made a generous donation

　　3．voluntary adj. 自愿的；志愿的；无偿的 归纳拓展 volunteer for sth. 主动承担；自愿/无偿给予/提供 volunteer to do sth. 自愿做某事 be voluntary to do sth. 自愿做某事 voluntary blood donation 无偿献血

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